Terminal spike (rarely the 2 or 3 uppermost) staminate only at base.
Stigmas 2 34–38, 79
Stigmas 3; spikes erect,
Short and squarrose 20, 21
Not squarrose 22, 30, 32, 46, 47, 54, 79
Stigmas 3; spikes more or less drooping 31, 51–53, 55–57
Terminal spike or spikes staminate.
Stigmas 2.—
Spikes spreading or pendulous 34, 37, 40, 41
Spikes erect or nearly so 9–16, 34–41, 85–91, 79